TY - JOUR

T1 - Decay of quantum turbulence generated by a vibrating grid at low temperatures in superfluid He-3-B.

AU - Bradley, D. Ian

AU - Fisher, Shaun N.

AU - Guénault, A.M.

AU - Haley, Richard P.

AU - Matthews, C. J.

AU - Pickett, George R.

AU - Tsepelin, Viktor

AU - Zaki, K.

PY - 2006/9/7

Y1 - 2006/9/7

N2 - We describe measurements of the decay of quantum turbulence produced by a vibrating grid in superfluid He-3-B at low temperatures. Two nearby NbTi vibrating wire resonators at different distances from the grid are used to detect the turbulence via a reduction in the quasiparticle damping owing to Andreev reflection by the flow around the vortex lines. The decay time constant of this turbulence, after stopping the grid motion, is longer at the wire furthest from the grid. This suggests that either the tangle evolves and moves away from the grid once the grid motion has been stopped, or that there is a faster decay mechanism in operation close to the grid.

AB - We describe measurements of the decay of quantum turbulence produced by a vibrating grid in superfluid He-3-B at low temperatures. Two nearby NbTi vibrating wire resonators at different distances from the grid are used to detect the turbulence via a reduction in the quasiparticle damping owing to Andreev reflection by the flow around the vortex lines. The decay time constant of this turbulence, after stopping the grid motion, is longer at the wire furthest from the grid. This suggests that either the tangle evolves and moves away from the grid once the grid motion has been stopped, or that there is a faster decay mechanism in operation close to the grid.

KW - superfluidity

KW - Helium-3B

KW - quantum turbulence

KW - vibrating grid

U2 - 10.1063/1.2354657

DO - 10.1063/1.2354657

M3 - Journal article

VL - 850

SP - 175

EP - 176

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

SN - 0094-243X

ER -